A cylinder gasoline can is 18 in across and 20 in tall which expression represents the approximate volume in cubic inches?

The expression that represents the approximate volume of the cylindrical gasoline can can be found using the formula for the volume of a cylinder:

Volume = π * radius^2 * height

The radius of the can is half of its diameter, so it is 18 in / 2 = 9 in.

Therefore, the volume is approximately equal to:

Volume = π * 9^2 * 20

Simplifying further:

Volume ≈ 3.14 * 81 * 20

Therefore, the expression that represents the approximate volume in cubic inches is:

Volume ≈ 5073.6 cubic inches.